<?php
/**
 * Created by clz.
 * User: clz
 * Date: 2018/7/31
 * Time: 10:55
 */

//异常
try
{
    $arr = range(1,10);//n=10
}
catch (exception $e){
    var_export ($e->getMessage());
}



//sort($arr);333 ms
//多维排序

$var = 'oioioio';

echo '<pre>';
var_export($var);die;